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Overview of the TREC 2007 Question Answering Track



Hoa T. Dang, Diane Kelly, Jimmy Lin


The TREC 2007 question answering (QA) track contained two tasks: the main task consisting of series of factoid, list, and ``Other'' questions organized around a set of targets, and the complex, interactive question answering (ciQA) task. The main task differed from previous years in that the document collection comprised blogs in addition to newswire documents, requiring systems to process diverse genres of unstructured text. The evaluation of factoid and list responses distinguished between answers that were globally correct (with respect to the document collection), and those that were only locally correct (with respect to the supporting document but not to the overall document collection). The ciQA task provided a framework for participants to investigate interaction in the context of complex information needs. Standing in for surrogate users, assessors interacted with QA systems over the live Web; this setup allowed participants to experiment with more complex interaction interfaces but also revealed limitations in the ciQA design for evaluation of interactive systems.
Special Publication (NIST SP) -


evaluation, question answering


Dang, H. , Kelly, D. and Lin, J. (2008), Overview of the TREC 2007 Question Answering Track, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed June 23, 2024)


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Created December 1, 2008, Updated February 19, 2017